単純なタスクの実行例

XAsyncBlock* async = new XAsyncBlock{};
async->queue = taskQueue;
async->context = contextData;
async->callback = 
    [](XAsyncBlock* async)
    {
        // The optional completion callback.
        delete async;
    }

XAsyncRun(async,
    [](XAsyncBlock* async)->HRESULT
    {
        // The work callback is implemented here.
        return S_OK;
    });